Seeds growth
Robert W. Messenger
Robert_W._Messenger at nyforest.edu
Tue Nov 5 00:07:21 EST 1996
It may take you awhile to get any return on your seed investment. The genus
you've picked are all notoriously slow germinators. Here's the information I
could find on the subject.
Ilex: Germination can take up to 3 years to complete, but may be improved by
warm stratification of alternating
temps between 68 and 86 degrees Farenheit.
Juniperus: The species J. ashei, J. deppeana, J. monosperma and J. virginiana
are recommended to be cold
stratified at 41 degrees Farenheit for 30 to 120 days. Below-freezing
temperatures during stratification
may cause delayed germination, or even ruin the seeds. Germination of J.
virginiana may be improved
by soaking the seeds for 4 days in a 1 per cent solution of citric acid
before stratification.
Taxus: Yews have a very strong dormancy, but it can be broken by warm and
cold stratification. The recommendations
I have read are 90 to 210 days at 60 degrees F., followed by 60 to 120 days
at 36 to 41 degrees F. I have also
read recommendations that specify prechilling the seeds for 270 days at 37
to 41 degrees prior to the above
warm-cold treatment.
Hope this helps.
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